Safety doorlock



March 24, 1931. 1, BoTlcKl SAFETY DOORLOGK Filed April 30, 1927 2 Sheets-Shet l 7v lig INVENTOR.

A TTORNEY.

SAFETY DOORLOCK I Filed April 30, 1927 2 Sheets-.Sheet 2 VENTOR A TTORNE Y Patented Mar. 24, 1.931

Vf v11,797,316

PATENT OFFICE*- N IGNATZ BoTroKI, or YoUNGsrowN. orrro f f SAFETY DOORLOCK Application inea April 3o,

bolt or latch bolt by a-sin'gle adjustment of Y thefmechanism associated therewith'. rlhe invention therefore has as its main object the provision of a structurev employing` a 15 single bolt which may be operated as aday latch', when it is not desired to lock the door,

and which onV the other hand can be employed f as a permutation lock bolt by the simple adjustment of means which will be fully set forth in the following speciiication.

Another important object "of the invention resides'in alock 'of the above character wherein the permutation mechanismy thereof includes a ratchet member against rthe `teeth'of whiclra pawlv engages andy which will produce ka clicking sound correspondingto the predeterminedv movement of the tu'mblerplate,r with the end 1n view of providing annunciative means whereby the person operatingr the mechanism maydetermme at what moment' hemust reverse the movement of the tumbler plate in order to set the .same in'proper registry forvpermitting the retraction of the bolt. K l i i Stillanother important object of this 1nvention resides in the provisionfof a permutationlock whereinv thebolt member cannot be retracted untily the tumbler members have beenbrought to a predetermined position. y Referring to the following specification and' claim other important objects and* advantages of this invention will readilyrbecome apparent." f v In the drawings n Y Figure 1 represents a plan view of the lock mechanism, the samebeing shown with the cover plate removed and disclosing the mechi anism therein.

Figure 2 represents a longitudinal sectional Vmember proper.

1927. seriai'No. 187,808.

view of the lock structure taken on the right. side of the bolt asshown in Figure 1.k

FiguresqY 5 and 6 respectively illustrate plan views of the several tumbler plates. l

Figure trepresents a split washer in plan View employable between'each of the tumbler plates. I Figure 7 is alplan view of the ratchet disk. i Figure 7a krepresents a perspective view of the operatingsleeve member. y f Figure 8 represents a transverse sectional viewtaken on aline through Figure l. Figure9 is a'longitudinal"sectionalview taken on aline through Figure fl, on the opposite side-ofthebolt from which the sectional view inFigur'e 2 was taken.

Figure 10 is an enlarged perspective View ofthe pawl actuating means for reti-acting thebolt,r l

Figure 11` is a'perspectiveview of a pawl trip means for converting the vlock mecha-V nism' from its combination knob operable latch, and y l l lFigure 12y is aperspective view of the pawl characterftol the Referringto-the drawings more in detail wherein like numerals designate like parts, a rectangular casing A'is closed at one side Aandabas secured to the inner side thereof an annular shell B. A suitable face plate may 0 be secured to one endof the casing. A and has an opening therein registered with the bolt opening in the. end of the casing through which the elongated bolt- B is slidable.

Spacevd.V guide plates l arranged on the inner 85 side of the sideJ 'wall of the casing serve to ,Q'uidezthe Aboltv inv its vrectilinear movement. The inner end ot' the bolt B is provided with a. reduced extension 2. The yreduced extension VZuis adapted for slidable movement 90 through an opening in the annular wall Bf'.

The'annularwall B is formed with spaced' circumferentially extending slots T2,' U2.' and V2, whilean` additional slot is formed in 4 the annular shell between the last mentioned 95 slot and the closedside of the l,casing A. A pawlS- is provided at one end with a laterl ally disposedL lug Z engageable through the last mentioned slotlforr they purposek hereinafter more fully described. A post 4 is se- 19o cured to the side wall of the casing A and the opposite end of the paWl 3 is'pivoted there- Y tensionally maintaining ythe same projected. j'

An arm 7 projecting laterally from-'the bolt B is pivoted at its outer end Withinthe bifurcated end of a bar lV. A laterally disposed head l/V at the opposite end of the bar Wis provided with teeth R U and V. The head is ,also provided .with anfapertured vfor mation 8 through which one end of the spring ele-ment 9 isslidable and adapted for tensionally maintainingv the teeth,projectedthrough the slots T2, U2and V2. [The spring elementis convoluted aboutvthe post .il andan- 'chored to the casing A in the manner shown in Figure 1.

Thev ymechanism includes a plurality of tumbler plates and for the purpose of mini,- mizinp' the deseriptlon and operation thereof, they will'be'describedimmediately'hereinafter in their registered relation,A or in other Words in a positionpermitting the retraction of the bolt B. The closed side of the casing is formed Withan. opening concentric with theannular wall B', and abushing L is adapted toA have one oi' its reduced ends engaged through said opening and to project throughrthe Wall B. The-bushingisformed Witha polygonal bore and is provided with Y aradialribI Oat its periphery.

A ratchet disk X is provided .Witha `predetermined number of teeth.aroimditsperiph-' ery, a space Y being left between theteeth at one point on the periphery of anextent that would have been taken up by one ofthe teeth. The'i'nneredge oi' the plate is formed Withthe notch Y in 'which the rib O engages .15 Whenthesame isdisposed Within the shell A B. The lug Z of the pawl 3 is 'adapted to engage between the teeth ot the'lratehet f disk X.

The tumbler plate F., shown inA Figure-6 of the drawings has a centrally cut portion through which the sleeve L extends. The rib O of the sleeve is operable Within an enlargen'ient of this opening, which is designated by R; The plate is yradially split to 'i' provide the space S2. An elongated peripheral indenture V is also ormedin the ltumbler plate. This plate is arranged lwithinthe annular shell over the ratchet disk X.

A second tumbler plate referred to'by D is tformed with central opening, the edge portion oi which is indentured as desigfnat'ed by @to accommodate theradialA rib 0.

This plateV is "likewisesplit to' provide theradial opening A, while the periphery is J formed with an elongated indenture U. This plate D is adapted to be arranged over the plate E.

A third tumbler plate C is formed With a central opening and a split P extends in- Wardly from the periphery to communicate With the central opening. The split S also Y communicates With the peripheral circumferentially extending indenture S, extending in onedirection from the split P, While the peripheral portion of the plate is also formed with a Vnotch T. This plate C is disposed over the plate D so that the radial rib O of the sleeve Will project into the space S.

In Figure 4l, a. Washer is shown designated by F and is split to provide the radial space S. The periphery ofthis Washer is provided with lugs F engageable Within.longitudinally extending grooves inthe inner face of the annular shell B. One of these Washers F is adapted to be interposedfbetween each of the tumbler plates C, D and E. In arranging' the tumbler plates to permit of the retraction ofthe bolt B, the plate E as Well as the plates D and C are' arranged With the radial openings S, S and S2 in registering relation and in registry 'with the opening of the annular shell B through Whichthereduced end 2 of thebolt is slidable. This disposition of the plates while causing the registering'of the indentures T, U and V will nevertheless result inthe irregular termination thereof in `respectto each other. The teeth of thepi'votal bar lV shown in Figure 10 is adapted for engagement Within the foregoing indentures. In this position of parts the lugZis engaging Within the-space Y at the end thereof-farther away from thenotch Y in which the radial ribfQof thesleeve engages.' l

Obviously, by now rotating the sleeve EL eoun'tercloekwise the .shoulder Jprovided by the notohT inthe uppermost tumbler plate C will engage the uppermost tooth R on the bar 1V. Due to the .frictional relatioiiofthe Washer between the tumbler.plates,'the plate C isthe "only plate rotated bythe sleeve in this direction, the rib O being free to move Within the indentures 'R and Q of the plates E and lD, respectively. Themovementof ,the plate D Will thus cause the teeth to move toward the opposite end of theslot through Wihch they project, the teeth U `and V being free to movetovvard theopposite endsof the peripheral indentures V Vand U of the plates E and D, respectively. The` consequential. pull on the bar W Will result in the retractile movement of the bolt B, its rediiced end portion 2 moving intotheradial openings of the'v tumbler plate.l mechanism may be employed for nretract-ing the boltV aftervthe tumbler .plates have been previously set.

If now desired, the mechanism maybe set so that the' same can only vbe employed as :a latch wherein the tumbler plates -Will rotate in unison and not individually.l

In this manner the Y An L-shaped bar has one end portion a projecting through the face plate A,lwhile its short leg end portion is disposed between the annular shell and the opposite end of the casing A. The end of the small leg portion is provided with an inwardly disposed foot c adapted for engagement behind the free end portion of the pawl 3. A pin b is likewise slidable through an opening in the face plate the same can only be operated as a latch, the

A and has its inner extremity secured to one end of a rocker arm 11. This rocker arm is pivotally mounted Yon the post 5 while its opposite end is bifurcated for receiving an upstanding pin 12 on the L-shaped member 10. A spring 13 extends from the post 5 and has its end bent for engagement in a pair of notches 14 on the inner edge of the L-shaped member 10. A

When the L-shaped member 'has been forced inwardly to assume the position shown.

in Figure 1 of the drawing, the spring 13 is engagedin the outermost notch 14 for retaining the member in this position with its foot member e disengaged from the end portion of the pivotal pawl 3.

In order to adjust themechanism so that pin b is moved inwardly, resulting in the outs en-ds of its peripheral indenture. By firsty rotatingthe rratchet plate X in a clockwise' ward movement of the L-shaped member 10 and the engagement of the foot e against the free end of the pivotalpawl 3, thus maintaining the klug Z engaged within'the elongated indenture Y of the ratchetplate X. In this manner the ratchet platecan only move to the extent of the indenture Y, which is suflicient to cause the retraction of the bolt B. Y

yIn employing this mechanism as a permutationlock the foot e is disengaged from the pawl 3 and .the sleeve rotated in clockwise direction. This results in a confused rela'- tion of the tumbler plates and theycan only be re-set by a person having knowledgeof theproper combination of movements necessary to return the'plates to registry. TheteethV on the ratchet plate X in contacting with the lug Z will produce a clicking sound announcing the disengagement of the lugV froml one toothV and its engagement with the next tooth. The teethv of the'plate corref spond in Vnumber to the distance around the periphery of each tumbler plate from the direction so that the lug Z is engaged within the indenture Y, the mechanism is then in a starting position from which counts may be l. made of the clicking sounds made as the vratchetV plate is then rotated in alternate directions to bring the radial openings S, S andfSQ', successively into Vregistry with the opening through the annular shell throughl which the reduceden'd 2 of the bolt is slidable. When the tumblerplates have moved to a position with their radial openingsin registry both with respect to each other. and to the opening in the annular casing, the teeth on the head of the bar W will be com? pletely within the peripheral indenturesof the plates and may thus be actuated by fur ther rotation of the plates in a counterclockwise direction to engage notch T with tooth R resulting in the retractile movement of the bolt as described above.

It is tobe understood that this invention is not limited to anyA particular` sized peripheral indentures, norl are the teeth on the"`r ratchet disk X to be limited, as a variance in these features may be made to produce a greater or lessernumber of combinations. VHaving described the invention, what is claimed as new is In a lock mechanism comprising, a casing,

a bolt slidable rthrough one wall thereof,

movable members having registrable openings therein,said membersbeing arranged at the inner end of said bolt, means for setting said members with their openings in registry, into which the inner end'of the bolt may be retracted, andmeans operated by said members whereby the bolt may beV thus 'los 

